S. No

Name of the Impurity

Recovery at LOQ (0.004 ppm)

Recovery at 0.03 ppm

1

NDMA

97.0

98.5

2

NDEA

103.7

90.8

3

NEIPA

97.7

101.4

4

NDIPA

100.4

101.2

5

NDBA

93.9

101.8

6

NMBA

101.7

103.2